//
// This file is part of Adguard for iOS (https://github.com/AdguardTeam/AdguardForiOS).
// Copyright © Adguard Software Limited. All rights reserved.
//
// Adguard for iOS is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Adguard for iOS is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Adguard for iOS. If not, see <http://www.gnu.org/licenses/>.
//

import Foundation
import SystemLibsResolv

public class UrlUtils {

    public static func isIpv4(_ candidate: String) -> Bool {
        var addr = in_addr()
        let retval = withUnsafePointer(to: &addr) { pointer in
            inet_pton(AF_INET, candidate, UnsafeMutablePointer(mutating: pointer))
        }

        return retval == 1
    }

    public static func isIpv6(_ candidate: String) -> Bool {
        var addr = in6_addr()
        let retval = withUnsafePointer(to: &addr) { pointer in
            inet_pton(AF_INET6, candidate, UnsafeMutablePointer(mutating: pointer))
        }

        return retval == 1
    }
}
